Saw set and swage.



PATENTED JULY 14, 1908.

No. 893,140. .H P. BRUNETT.

SAW SET AND SWAGE.

APPLICATION FILED MAY -7, 1907.

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F. BRUNETTJ SAW SET AND SWAGB.

APPLIUATION FILED MAY 7, 1907.

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FRANK BRUNETT, OF EVARO, MONTANA.

SAW SET AND SWAGE.

Specification of Letters Patent.

Patented July 14, 1908.

Application filed May 7; 1907. Serial No.-372,295.

To all whom it may concern:

Be it known that I, FRANKBRUNETT, a citizen of the United States,residing at Evaro, in the county of Missoula and State of Montana, haveinvented certain new and useful Improvements in Saw Sets and Swages, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

My invention relates to improvements in devices for setting and swagingthe' teeth of saws, and it consists in the novel features ofconstruction. and the combination and arrangement of parts hereinafterdescribed and claimed.

The object of the invention is to provide a simple, practical andefficient device or ma: chine of this character whereby the teeth of asaw may be expeditiously shaped so as to produce the best possibleresult when the saw is in use.

The above and other obj ects which will appear as the nature of theinvention is better understood are accomplished in the preferredembodiment of my invention illustrated in the accompanying drawings, inwhich Figure 1 is a perspective View, showing the device applied to asaw,- Fig. 2 is an end elevation; Fig. 3 is a vertical section; Figs. 4and 5 are vertical transverse sections taken respectively on the planesindicated by the lines 44 and 55 in Fig. 3 and Fig. 6 is a detailperspective of'the setting gage and file and its attached parts.

The body 1 of .my improved saw set and swage is preferably a castin andof inverted U-shape so as to provide a s ot' or openin in its bottom forthe reception of' the toot ed edge of the saw. The front portion ormember 2 of this body is somewhat longer than its rear portion or member3 and is adapted to serve as a stationary clamp jaw with which co-acts amovable clamp jaw 4 carried by the rear portion 3. Thejaw 4 is in theform of a plate mounted to slide toward and from the jaw 2 and adaptedto be retracted by a coil spring 5 which surrounds a guide pin 6projecting rearwardly from the aw plate 4 and through an opening in theportion 3 of the body. This pin 6 guides the plate 4 in its slidingmovement and upon its outer end is a head which retains the spring uponit. The jaw 4 is projected to clamp the saw against the stationary jaw 2by a screw 7 arranged in a threaded opening in the. member or' portion 3of the body and having its inner rounded end projecting into a seatformed in the jaw 4. A lever 8 is suitably secured upon the outer end ofthe screw for operating it.

For the urpose of guiding the body along the edge of the saw as 1t isadjusted to permit the device to operate upon different teeth, I providetwo similar uide or gage plates 9, 10. One of these plates is arrangedupon each side of the front portion of the body 1 and is adjustablevertically thereon to permit the saw to project the desired extent intothe body. Each of the plates 9, 10 has an outer end of right angularform to provide a vertical portion 11 which engages one side of the sawand a horizontal portion 12 which engages the points of the teeth of thesaw and is of such length as to rest upon two or more of them. Ipreferably cover the bottom face of the portion 12 by a glass plate 13which is cemented or otherwise secured. The inner end of each of theplates 9, 10 is also of right angular form, as shown at 14, to engageand slide upon one of the vertical edges of the portion 2 of the body.Each of the ends 14 is formed with a vertically extending slot 15 forthe reception of a clamping screw 16 which latter serves to adj ustablysecure said plate upon the body.

For the purpose of swaging the teeth of the saw I rovide in the upperportion of the body 1 a jacent to one end a cam or eccentric 17 providedat one end with a reduced journal 18 mounted for rotation in the portion3 of the body and at its opposite end with an enlarged journal 19mounted for rotation in the front ortion or member 2 of the body and disose concentrically with the journal 18 'an eccentrically with thecentral portion of the cam or eccentric which latter is transverselydisposed in the body, as clearly shown in Fig. 2. The cam 17 isremovably secured in the body by means of a set screw 20 which passesthrough a washer 21 engaged with the outer face of the portion- 3 of thebody and into a threaded socket in the journal 18. The cam is operatedby a hand lever 22 which is removably and adjustably secured upon thefront or enlarged journal 19. This connection of the lever is effectedby forming the end of said journal and the inner face .of the inner endof said lever with radial serrations or ribs 23 which are held inengagement with each other by a re.- taining screw 24 assed through thelever and into a threa ed socket concentrically disposed in the journal19. By reason of this connection between the lever and the cam it willbe seen that when the lever is swung to any predetermined position oragainst a suitable stop, as presently exs plained, the cam 17 may bemoved a predetermined extent or to a position that will properly swagethe saw tooth beneath it. Arranged. in the body beneath the cam 17 is atransversely extending pin 25 adapted to be engaged by one of the sawteeth and to serve both as a stop and as an anvil. When the tooth to beswaged engages the pin 25 the tooth will be properly positioned beneaththe cam so that when the latter is operated the pin will act as an anviland take the thrust of the cam. Said pin is removable and has a fingerpiece upon its rear end.

For the purpose of setting the saw teeth, I provide a setting pin 27which is in the form of a screw arranged in a threaded opening in thefront portion 2 of the body adjacent to one side edge of the same. Thisscrew haS upon its outer end a suitable operating lever 28 and its innerend is beveled or cone shaped, as shown at 27 so as to adapt it toengage and bend a saw tooth over against an anvil formed by the upperedge 30 of the movable jaw plate 4. Upon reference to Fig. 4 it will benoted that the set pin 27 is disposed in a horizontal plane slightlyabove the anvil 30 so that the saw tooth may be bent or set to anydesired extent by screwing the pin 27 to i a greater or less extent intothe body. To gage the extent of movement of the screw or set pin and togive the teeth of the saw a uniform set, I provide a combined gaging andfiling member 31. The latter is in the form of a plate secured by ascrew 32 or other suitable means upon the inner end of a shaft 33 whichis rotatably mounted in a bearin sleeve 34. The latter is externallythreade and screwed into a threaded opening in the portion or member3 ofthe body and is adapted to be held in an adjusted position by a setscrew 35 or other suitable means. The sleeve 34 provides an adjustablebearing for the shaft or pivot 33 of the combined gage and filing member31 so that said member may be adjusted transversely or laterally in thebody 1 and toward and from the saw tooth which is alined with thesetting pin 27.

The inner face of the plate 31 is formed with an under cut or dove tailrecess in which is removably secured a file 36 adapted to swing acrossthe bent end of the saw tooth when the shaft 33 is rocked or rotated.thus 0 erated by a hand lever 37 which is removabIe and. adj ustablysecured, as shown at 38, upon the projecting rear end of the shaft 33.When it is desired to adjust the bearing sleeve 34 the handle 37 isremoved and the screw 35 is screwed out of engagement with said sleeve.After it has been properly adjusted it is secured by the screw 35 andthe handle 37 is then applied to the shaft 33 so Said shaft is that whenthe handle is swung the gage and file late 31 will be oscillated orswung across the ent end of the saw tooth.

In using the device for swaging the teeth of a saw, the body 1 is placedover the toothed edge of the saw and the stop pin 25 is engaged with oneof the saw teeth. The plates 9, 10 are then adjusted upon the body sothat the saw will project into the same to the desired extent. The bodyis then clamped upon the blade by swinging the hand lever S downwardly.The hand lever 22 is then adjusted upon its cam or eccentric 17 so thatwhen said lever 22 is swung downwardly until it contacts with theprojecting end of the set pin 27, the swaging cam 17 will be swungdownwardly a distance suilicient to properly swage the saw tooth beneathit. When the device is used for setting the teeth of the saw the stoppin 25 and the cam 17 are removed, and the body is then properlyadjusted upon the saw, as above stated. The bearing sleeve 34 is thenadjusted to properly position the gage and file plate 31 and the handlever 23 then turned to screw the setting pin inwardly and cause its end28 to bend one of the saw teeth over the anvil 30. To determine whetheror not the tooth has been bent to the desired extent, the hand lever 37is swung downwardly so that the plate 31 will be swung downwardly andinwardly across the bent tooth. If the file 36 does not touch the tooththe lever 28 is turned to a greater extent to move the setting pininwardly to a greater extent. If the tooth has been bent too much thefile 36 as it oscillates across the same will file or cut the point downso that all of the teeth which are operated upon by the device will havethe same set. This set is of course determined by the adjustment of thebearing sleeve 34 in the body, as above stated.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. In a device of the character described, the combination of a body totake over the edge of a saw, a setting )in arranged transversely in oneside of saiil body, an anvil to coact with said pin, and a gage memberarranged in the other side of said body and movable across thelongitudinal axis of said pin.

2. In a device of the character described, the combination of a body totake over the edge of a saw, a setting pin arranged transversely in oneside of said body, an anvil to co-act with said pin, a gage membermounted in the other side of said body and movable across thelongitudinal axis of said pin, and a file carried by said gage member.

3. In a device of the character described, the combination of a body totake over the edge of a saw, a setting pin arranged transversely in oneside of said body, an anvil to co-act with said pin, a transverselyarranged co-act with said'pin, a bearing sleeve in the other side ofsaid body and adjustable transversely therein, a pivot in said sleeveand a gage member upon said ivot and adapted to swing across thelongitudinal axis of said pin.

5. In a device of thecharacter described, the combination of a body totake over the edgeof a saw, a setting pin arranged in one side of saidbody, an anvil to co-act with said pin, a bearing sleeve screwed intothe other side of said body, means for retaining said sleeve in anadjusted position, a pivot in said sleeve, and agage plate carried bysaid pivot.

6. In a device of the character described, the combination of a body totake over the edge of a saw, a setting pin arranged in one side of saidbody, an anv1l to co-act with said pin, a bearing sleeve screwed intothe other side of said body, means for retaining said sleeve in anadjusted position, a pivot in said sleeve, a lever upon the outer end ofsaid pivot, and a gage plate upon the inner end of said pivot.

7. In a device of the. character described,

' the combination of a body to take over the edge ofa saw, means forguiding said body in its sliding movement on the saw, means for clam ingsaid body to the saw, an anvil in said ody, a screw arranged in one sideof said body and having a setting point at its inner end, means at theouter end of said screw for turning the same and an adjustable gagemember mounted upon the other side of said body for swinging movement ina plane transverse the axis of said screw.

8i In a device of the character described,

the combination of a body of substantially U-form, a clam ing platemounted upon one member of said a saw against the other member of saidbody, the upper portion of said plate being adapted to serve as ananvil, means for operating said plate and a set pin arranged in saidbody and adapted to co-act with the anvil formed by the upper portion ofsaid clamping plate. 9. In a device of the character described, thecombination of a body of substantially U-form, a clamping plate mountedupon one member of said body and adapted to clamp a Y;

saw a ainst the other member of said bo a gui e for guiding said platein its sliding movement, a spring for retracting said plate, a screw forrojecting said plate and a se': pin in said body to co-act with theupper portion of said plate.

10. In a device of the character described, the combination of a body ofU-form having long and short depending members, a clamping plate uponthe short member, a pin projecting from said plate and slidable in anaperture in said short member, a head upon the outer end of said pin, acoil spring surrounding said pin between said head and the body, a screwin said short member to impinge against said plate and a lever upon theouter end of said screw.

In testimony whereof I hereunto afiix my body and adapted to clamp

